FDX-B 134.2 kHz RFID reader

Other Hardware General Electronics
66

Hi and Sorry for late reply, been working on my mechanical crafting certificate this week.

Heres my code

#include <Servo.h>
#include <SoftwareSerial.h>

SoftwareSerial RFID(7, 8);

byte b;
byte buffer[30];
uint8_t idx;
boolean RFIDstart = false;
byte XOR;
byte inverted;
uint32_t value;

int yellowLED(3);
int redLED(4);
int blueLED(5);

Servo myServo;

void setup()
{
Serial.begin (9600);
RFID.begin (9600);
pinMode(yellowLED, OUTPUT);
pinMode(redLED, OUTPUT);
pinMode(blueLED, OUTPUT);
myServo.attach(12);
}

void loop()
{
myServo.detach();

String content = "";
while (RFID.available())
{
b = RFID.read();

if (b == 0x02) // Start byte
{
  idx = 0;
  RFIDstart = true;
}


if (RFIDstart) // Ignore anything received until we get a start byte.
{
  buffer[idx++] = b;

  if (b == 0x03) // End byte
  {
    RFIDstart = false;
  
    
    
    // Display the received data.
    Serial.print("Received data: ");
    for (int x = 0; x < idx; x++)
    {
      if (buffer[x] < 0x10)
      {
        Serial.print("0"); // Pad with leading 0
      }
      Serial.print (buffer[x], HEX);
      Serial.print (" ");
    }
    Serial.println("");


    // Check we received the message ok.  XOR checksum on bytes 01-26 should match byte 27.
    XOR = buffer[1];
    for (int x = 2; x <= 26; x++)
    {
      XOR ^= buffer[x];  
    }
    Serial.print("Calculated checksum: ");
    Serial.print(XOR, HEX);

    if (XOR == buffer[27])
      Serial.println(" (Correct)");
    else
      Serial.println(" (Error)");


    // Check the inverted XOR checksum
    inverted = ~XOR;
    Serial.print("Inverted checksum: ");
    Serial.print(inverted, HEX);
    if (inverted == buffer[28])
      Serial.println(" (Correct)");
    else
      Serial.println(" (Error)");

    
    // Extract the card number from bytes 01 (LSB) - 10 (MSB).
    value = 0;
    for (int x = 10; x >= 1; x--)
    {
      if(buffer[x] <= '9')
        value = (value<<4) + buffer[x] - '0';  
        
      else
        value = (value<<4) + buffer[x] - '7';  
    
    }
    Serial.print("Card number: ");
    Serial.println(value);

    //If the chip is scanned, action will happen. LED just for indecators. Servo for feeding
    
    if(value == 3611416205)

{
Serial.println("Todd");
// Diffrent commands
digitalWrite(yellowLED, HIGH);
delay(2000);
digitalWrite(yellowLED, LOW);
myServo.attach(12);
myServo.write(90);
delay(2000);
myServo.write(0);
delay(2000);
myServo.write(90);
delay(2000);
myServo.detach();
delay(600000);

}

    // Extract the country number from bytes 11 (LSB) - 14 (MSB).
    value = 0;
    for (int x = 14; x >= 11; x--)
    {
      if(buffer[x] <= '9')
        value = (value<<4) + buffer[x] - '0';
      else
        value = (value<<4) + buffer[x] - '7';  
    }
    Serial.print("Country number: ");
    Serial.println(value);


    // Extract the Data Block from byte 15.
    Serial.print("Data block: ");
    Serial.println(buffer[15] - '0');

    
    // Extract the Animal Flag from byte 16.
    // LED on off just for testing
    Serial.print("Animal flag: ");
    Serial.println(buffer[16] - '0');
    digitalWrite(redLED, HIGH);
    delay(2000);
    digitalWrite(redLED, LOW);
    delay(2000);
    

    Serial.println("\r");
  }

  }
  
}

}

The problem is, when the cats stay in the feeder, the RFID dosent turn of, even with delay at the end, and scans the same chip 2-3 times, and when the delay is over it start feeding 2 more times when the cat is gone.

Thank you for your time.